1,4-dichloro-2-(methylsulfonyl)benzene

1,4-二氯-2-(甲基磺酰基)苯

Also known as: 2,5-dichlorophenyl methyl sulfone, 2,5-dichlorophenylmethylsulfone, Benzene, 1,4-dichloro-2-(methylsulfonyl)-, 1,4-dichloro-2-methylsulfonylbenzene

1,4-dichloro-2-(methylsulfonyl)benzene (CAS 66640-63-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C7H6Cl2O2S and a molecular weight of 225.09200 g/mol. It is also known as 2,5-dichlorophenyl methyl sulfone, 2,5-dichlorophenylmethylsulfone and Benzene, 1,4-dichloro-2-(methylsulfonyl)-. Key properties include a boiling point of 375.4ºC at 760 mmHg and a density of 1.451g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
66640-63-9
Jingsj CID
J-1165330-9
Molecular Formula
C7H6Cl2O2S
Chinese Name
1,4-二氯-2-(甲基磺酰基)苯
Molecular Weight
225.09200 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point375.4ºC at 760 mmHg
Density1.451g/cm3

Frequently Asked Questions

What is the CAS number of 1,4-dichloro-2-(methylsulfonyl)benzene?

The CAS number of 1,4-dichloro-2-(methylsulfonyl)benzene is 66640-63-9.

What are the molecular formula and molecular weight of 1,4-dichloro-2-(methylsulfonyl)benzene?

1,4-dichloro-2-(methylsulfonyl)benzene has molecular formula C7H6Cl2O2S and molecular weight 225.09200 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "1,4-dichloro-2-(methylsulfonyl)benzene (CAS 66640-63-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1165330-9 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.